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Bulletin No. 25. Mf. 'M. LEIGH 


Panvary obo Lee). 
- COMMONWEALTH OF PENNSYLVANIA 


HPARTMENT OF INPERNAD AFPATRS 
James F. jJoodward, Secretary 


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B AU OP TOPOG 


RAPHIC aND GEOLOGIC.:L SURVEY 
gaat Hs Ashtle 


y,. State Geologist 


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COAL RESERVES IN GREENE COUNTY, PENNSYLVANIA 


Introduction, 


In connection with the “Introduction to the Bituminouc Coal 
Fields of Pennsy lvania" now being prepared for ase amet on by the 
Geological Survey of Pennsylva ania , coal reserves of the bituminous 
fields are being computed by Mr, John fT. Reese, In order to render 
This information available at once without waiting for nee uncertain 
Gave of the publication of the report, an abs stract of Mr. Reese's 
Saeures for Greene County is given herewith, All of thie information 
Pesci y available at this time has been usec in the computation, which 
tTOllowec the methods used by the Lard Classification Board of the 
Worted States Geological Survey:‘in its valuation of the public coal 
dands. The results are given by beds for each tovmship. For some 
beas and for some areas the data are abundant and the resuits entirely 
reliable, For other beds and areas tre data are meager and the results 
Peogect tO revision as additional data are obtained. <All of the data 
used and the computation sheets are permanently filed so that modifi- 
Cavionsor the original figures dve to the securing of additional aata 
ean be made readily. 


Mhe figures presented are preliminary and subject to correction 
TOY any area vhen that area Shall be studied in detail. In the mean- 
time critical examination of the figures is invited in order that the 
Tesults may be made as accurate as possible, To that end the Survey 
will Eiare every bit of data not now in its possession. Records of 
drillings and other data: will be kept strictly confidential if so 
desirec, although the Bureav naturally prefers to be able to use data 
freely. 


George H. Ashley. 


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Coal Beds, 

Greene County contains the greatest coal reserve in the State. 
Pive beds are of economic interest and have been used in calculating 
the ouantity of coal in the fround. These becs in order or pres ent 
importance are the Pittsburgh, Sewickley, Jaynesburg, Jashington, 
and Freeport. 

Pittsburgh Coal. The mining and prospecting of the Pittsburgh 
GCOal has furnished measurements of its thickness in several places and 
With data trom contiguous sreas in West Virginia, maxes possible 9 
fairly reliable computation of the quantity. The Pittsburgh coal 
underlies all the county except a narrow strip on Monongahela River. 

Sewir fickley Coal. The Sewickley coal underlies practically the 
whole county and is exposed only in the southeast part and at th 
mouth of Ten Mile Creek. Mines on the outcrop and data from adjacent 
Parts of est Virginia furnish the only data for computing the tonnare. 
wa average of 20 inches has been used in townships for which na 
measurements can be obtained, This coal is thickest in the southeast 
Part of the county and thins rapidly toward the north and west. 

Taynes urg Coal. Numerous sections from the extensive outcrop of 
mne daynesburg coal and data from reports of the \Jest Virginia Geolog- 
ical Survey give a fairly accurate basis for computing the thickness 
Of this coal in my township. This bed is broken by many partings and 
av present is used only locally. It eal not be mined extensively for 
Sommercial use until railroads are built into the county or the Pitts- 
burgh and Sewickley beds are nearer exhaustion. 

washington Coal. A fair amount of data regarding the > Washington 
coal is ha d from measur ments of the outcrop in the eastern port of the 
county and from its occurrence in Vest Virginia on the south and west, 


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This coal is mined for local domestie use throug shout the. area where 
it outcrops. The bed is badly broken by partings, is very ashe is 
“mined only because of local convenience, and until necessity aemande 
Will not be utilized much more extensively than now. <A thickness of 
2 teet has been used for computing the suantity in those townships 
for which no weasurements sre available, 

Freeport Coal. Little is known of the Freenort coal in Greene 
County except that the records of churn drill holes show coal at its 
horizon. The thickness along Monongahela River is known from records 
of ors drill holes. This coal lies about 600 feet below the Pitts- 
burgh coal; it does not outcrop and so is assumed to:underlie the 
whole county at considerable depth and with unbroken continuity, In 
Computing the quantity a thickness of 30 inches has been used in all 
townships. The recoverable ouant CL oY has been estimated at 50 per cent 


Of the whole, from which has been deducted 15 per cent for loss in 


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mining. Thin bed is rankec fifth because its regularity and extent 
are wholly assumed. Should future prospecting Show it thicker and 
better than has been assumed, this coal may eventually be mined in 
Spite of its great depth, and rark higher in economic sony than the 
dirty but more accessible Yamesbure and Washington co ° 

Other col peas thin these)tive are mined for local use but as 
they are not important, and little is Imown of their extent and thick 


ness, they have not been included in the computation of the reserves. 


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Method of Computing Reserves. 
The following method was used in. computing the coal reserves: 
A base map for each coal bed was mede by tracing its outcrop 


trom the quadrangle maps made by the U. S. Geological Survey. All 


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available measurements of a coal bed, gathered from Federal and State 
Te Ports, Mine maps, core drill records and personal inspections, were 


plotted on the map of that coal bed at the locality represented. By 


areas of enual thickness 


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studying the distribution of the figures 
were platted, and by means of a planimeter, an instrument for meacur= 
ne plane areas, the area of each coal bed in each township was 
measurec. For calculating the cuantity of coal’in any area 90,000 
short tons'per-inch per square mile was used. 

Areas from which coal has been removec were determined from mine 
maps and platted to seale on the nee’: maps. The same method as above 
was used for computing the quantity of coal extracted, 

Having calculated the duantity of coal orizinelly contained 
Within the area’ of any bed and subtracted the cuantity already mined 
Out, the writer determined from engineerins experience the probable 
percentare of each bed which could be recovered in different locali- 
ties. This varies from 50 to 100 per cent, depending on the thickness 
Gna character of the bed. The quantity of coal computed to be in any 
bead, multiplied by the assumed percentage of recovery, less 15 per 


Gent for loss in mining, gives the estimated recoverable tonnage. 


Coal Reserves, 
The result of computing the coal reserves in Greene County based 
on the latest maps, engineering data, and methods is shown in the 


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followings tables: 














Te KO 
TO 4 O00 787 LL9 
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48 Svl Gea 
OS45 Qec 
8o8 30° T 
L739 LT OG6 SG% SIT’ 
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OSL: L4G xz 
042° S92" aa OGL‘ 26 
ee ccc ee rerent se 00% 
; Set et. V OCC = =i 70 fonts ie er 
Tr ‘ ns — Z ; aa ; Zz =} Be | 
GéT G22 CLG 000 | #88) 7 000‘ 24g ae 000° 92° ,O8T 099° gs" 
GS 2L9° 987 000'894'9 090° 345% ye og [yh ad Ves 95 ees 
ras ne aa Jo Vv 94 59 aay BS ieee Sd OG EC oe Od Hae pee Od - “ 
C Ie A908 =e AGhteCTT 3 a: oa | 475 36 OLY .66 L-8te-Gal 
Gua 88S GS OOS a i Sk A OSG8 .8 ae 009-76 Pease ANAS AT Io O See O4L i 
21 Pp aie ae rere S8 81g VI OF 758 SS 00 OTe 1% GG. 90T. 66 £9 Te 
CVE 028 Leg 000° 694° T? 000° O84" CL3'ee9' LG 000° 2 mon Bam 2 66L ous 
Sie: Bc. FWY ae © 500! Tr * . C07" NCO * 9% Oca poe 49t 300! alg 97 PA oe Ah! EG HO eet 
oe eae anaes eae hee 0G9‘ 290 tet eer te: Se Eel meet 
00G'S66'% S nett oor 3 100 264 Oe 098 45 VILL G76 00S: 7TT 00‘ 9ue'922 TTT TICS 
656. VSS 5 hha. Ge C00. 249-5 Goi etre 000°2 c; sks ae SG Bie 2 ee 
006/289! 422 006° LZ eS C00‘ = se ase eR te Senge ORE BT AV Gal BP poms 
ee Eee ee pueetespe et a0 eT. 000,018 {Ty seg: eaurost £az0g 
\ G +, Ox rs - dat i ar) ae i Bees 07 CG Q i (GQ ‘ S oF 
er 000‘ F O66 eet oly Lg G8 (SAL 6% £SG | S7T shpat: 
ee 78 ae VOL .G2 00 8389 FT 000° 890° 48 08-873 LT? 03 oLidene UVELOV 
29 | cos’ 25e QUO S Ap Osh. JOG Sas { = : CLT ouU Z 
“ape 00' Be oes 00% 845 Cg 000/048 | > 040 £26" Lat a 
~ (2 tn aaq‘e ee = o> 333 a = ; os ee : 
GL8* Bee otoce oO ergs 28 po, 80S Lehr Se hese oe ot eae 
; G ; = Ost’ Es a ao ore. — 36 Aone $ VES KO SH a 
990° g .96G va 9% Sadat 6 ; OLE Vet eG 7G ort 
0926 682 008/229 (63 C00 09g 8T G40) S94" 9E 00S" ZIL'¢ 094‘ L78' ie pus OLD 
SS Se ate 00 78 Seo! GSa‘vIt a ae 06S eee 
007‘ 90¢‘0¢ GAT La‘ T9T OGL RGR‘ LL OLT‘ 906 ee ULTYUCLT 
5 pa = = : 
TLq0 | 00? ‘OST 6¢ 000/ 00'S! Pee a pxuund 
git ee : $ 000° 226' Ty Oe ee 
: 194 SUTt v a oS a 
eae FCUTYS —f re O94 SL¥‘90T Tepe) 
= Lous Ta eee ; STNG Sou att occa 
ze C. 4.2 08 sued oi x 
Of. SUVeth. Ut. £ ee TIO TOS <~o 
eS *O * ———$—$_________-- Ue 
309 ST Q319 A000 — OT ngqs49 Td Gt 
= 04 a= TTORTyp2 
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Coal Reserves in Greene County, in short tons. 


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Bea Original deposit Mined out Recoverable 


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Pitts>urgh 3.919 485,600 39,420,000 2,831,453 


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Sewickley 1,393,407 ,000 er OC Lyd hee oD 


000 270,000 1,647,858 950 


Vashington 865 , 880 , O00 100 , O00 ¥359', 148), 850 


Freeport 1,594 ,080 ,000 ~--- 677 484,000 


es 


Total 10, 330,094,600 42 490,000 7 011,399,400 





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The table on page 5 gives the estimateé recoverable tonnaze by 
beds and townships. The figures heave been given 25 computed. It 
should however be distinctly understood thet while the acreage of 
€ach of the beds has been accurately computed, the reliability of the 
everage thickness of the coals usec in the computation of tonnage de- 
creases for the several becs given from left to right and for the- 
TOWNShivos from east to west or from nortreast to southwest, Thus, 
Wiile the ficures for the Pittsburgh bed are conservative and probably 
reliable, the figures for the Freeport coz1l may be much too small or 
many times too large, 


Detailee tablés of the coal reserves in each township have been 
prepared and will apvear in printed form in the report now being 
written on the bituminous coal fields of the State. They can be con- 
sulted in the office of the Survey; or figures for a single township 
Will be sent on request. 


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